what hamish said, an ecu flash with more boost (can be done via factory ecu and factory solenoid or buy a 3 port solenoid that plugs in to the factory loom for $115)
dual map it with 98 and e85, they pickup a decent 30kw or so. stock tune is only ~160kw at the wheels, remap with ~24psi or slightly more on the e85 map.